Update hjson requirement from ~=3.0.0 to ~=3.0.1 (#48)

Updates the requirements on [hjson](https://github.com/hjson/hjson-py) to permit the latest version.
- [Release notes](https://github.com/hjson/hjson-py/releases)
- [Changelog](https://github.com/hjson/hjson-py/blob/master/history.md)
- [Commits](hjson/hjson-py@v3.0.0...v3.0.1)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -1,4 +1,4 @@
-hjson~=3.0.0
+hjson~=3.0.1
 mock~=3.0.5
 pyroute2==0.5.*
 pyserial~=3.4.0